Squeezebox,
I've got one of those dance books that I bought at the festival 20 or so years ago. It was a week of dreadful weather (made you glad to be inside, dancing), and all the dances are called Puddles, Sea Mist etc. The one I use still is Whirlwinds (loosely based on Whirligig, but easier).
I also picked up a dance called The Whitby Seaweed Dance, a couple of years ago at a barn dance in Beverley. Did that come from those workshops?